Snape Vampire Theory (short)

[severusbook4]

No: HPFGUIDX 77906

I noticed in POA Harry remembers studying vampires in DADA and states that they 
have waxy, pale skin.  But he is talking of Sirius at the time.

Pg. 38 POA U.S. softback

"Harry looked into the shadowed eyes of Sirius Black, the only part of the sunken face 
that seemed alive.  Harry had never met a vampire, but had seen pictures of then in 
his DADA classes, and Black, with his waxy white skin, looked just like one."

Is Severus ever portraid to look like this?  It is the only description of vampires I have 
found in the books thus far.  Sorry if this has been posted.

Severus "would be cool to ba a vampire" Snape